baber/WOPTO huggingface dataset:
Patent GB-1114666-A (GB)
Title: Process for the production of ª-carotene
IPC: C12P23/00
Filed: 1966-07-08
Abstract: In a process for producing b -carotene by culturing aerobically the + and - forms of Blakeslea trispora in a nutrient medium, there is added to the medium, as an activator, (a) a hydrazide of formula Het-CO-NHNH2 where Het is a mono- or di-nuclear unsaturated heterocyclic radical, other than 4-pyridyl, in which each ring has 5 or 6 atoms and the hetero atoms are oxygen, sulphur or nitrogen, or (b) a pyridine of formula <FORM:1114666/C2/1> where R is an alkanoyl radical of 1 to 4 carbon atoms, benzoyl, an alkanoyl or benzoyl radical in which the oxo group is replaced by a condensation or addition product thereof, hydroxyl, hydroxyalkyl of 1 to 4 carbon atoms, carbamoyl N-alkyl or N,N-dialkyl-carbamoyl, thiocarbamoyl or N-alkyl or N,N-dialkyl-thiocarbamoyl, or (c) pyridazine.  The nutrient medium may contain from 0.1 to 10 grams per litre of the activator.  In examples, b -carotene is obtained by culturing + and - forms of Blakeslea trispora using as the activators 2-furoylhydrazine, 3 - pyrazolyl - carbonyl - hydrazine, 2 - methyl - 2 - pyrimidyl - carbonyl - hydrazine, 2 - indolyl - carbonyl - hydrazine, 2 - pyrazinyl - carbonyl - hydrazine, 4 - thiazolyl - carbonyl - hydrazine, 4 - formyl - pyridine, 4 - hydroxy - pyridine, 4 - thiocarbamoyl - pyridine, 4 - hydroxymethyl - pyridine, 4 - benzoyl - pyridine, 4 - acetyl - pyridine, thiosemicarbazone of 4 - formyl-pyridine and pyridazine; the aqueous culture media contain distillers solubles, starch, soya oil, cotton oil, yeast extract, potassium dihydrogen phosphate, manganese sulphate, thiamine hydrochloride, 2,2,4 - trimethyl - 6 - ethoxy - 1,2 - dihydro - quinoline and 2,6,6 - trimethyl - 1 - acetyl - cyclohexene; b  - ionone is added to some of the media.
Patent GB-929781-A (GB)
Title: Fluidised bed apparatus
IPC: B01J8/34
Filed: 1958-09-26
Abstract: <PICT:0929781/III/1> <PICT:0929781/III/2> In a fluidized bed apparatus, laminar deflectors are arranged in the bed to deflect rising gas from the central part of the bed toward the outer parts of the bed to avoid the formation of 'bubbles' the deflectors being arranged in pairs the members of which diverge upwardly and said pairs lying vertically one above another.  Gas may flow back into the centre of the bed between said pairs of deflectors or means may be provided to supply additional gas between said pairs of deflectors. As shown in Fig. 1, porous or perforated tubes 19 are provided to supply additional gas, the deflectors are all the same size and heat exchanger tubes 21 are also provided.  In Fig. 2, the deflectors 24 are reduced in size toward the upper part of the apparatus to assist uniform fluidization.  The Provisional Specification is not restricted to the use of deflectors to remove gas from the central part of the bed, and refers to formation of 'bubbles' in the outer parts of the bed. The half-angle at which the deflectors diverge is preferably 17 1/2 -22 1/2 degrees, and as an alternative to the reduction of size referred to above, the pairs of boards (deflectors) nearer the upper part of the bed may be more widely spaced.  In one embodiment a deep, narrow bed is provided and the members of the successive pairs of boards are spaced further apart toward the upper part of the apparatus.  The apparatus can be applied to the treatment of textile webs, and also to wood fibres and the heat treatment of glass.
Patent GB-647633-A (GB)
Title: Improvements in or relating to very high frequency radio receiving apparatus
Inventor: ANDERSON EDWARD GEORGE ORME
IPC: H04N5/44
Filed: 1948-11-29
Abstract: 647,633. Radio frequency coupling arrangements. SCOPHONY-BAIRD, Ltd. Nov. 28, 1948, No. 30940. [Class 40 (v)] The input electrode of the first valve of a receiver operating above 30 Mc/s. is directly connected to a resonant aerial at a point at which the aerial impedance is equal to the input impedance of the valve. As shown, the aerial 10 is a half-wavelength or a multiple of a half-wavelength of flexible wire, the impedance at its end (4000 ohms) being equal to the input impedance of the valve used. A transformer is provided in the grid circuit for connection to the feeder of a remote aerial where one is available.
Patent GB-610723-A (GB)
Title: Process for the separation and purification of stereoisomeric hydrophenanthrene carboxylic acids
IPC: C07C51/487
Filed: 1945-11-19
Abstract: Stereoisomeric hydrophenanthrene - 2 - car - boxylic acids, containing a hydrocarbon radical in the 1-position and, if desired, also in the 2-position, and containing in the 7-position a phenolic hydroxy group or a substituent converticle thereto, are separated and purified by converting them by means of a solution of alkali carbonate (e.g. sodium carbonate) into salts and progressively increasing the hydrogen ion concentration of the solution of salts by treatment with an acid agent (e.g. carbon dioxide or tartaric acid, followed by mineral acid), whereby the acids are fractionally precipitated; or by converting the acids selectively into their salts (e.g. by agitating the solid acids or solutions thereof in an organic solvent with aqueous solutions buffered to increasing pH values, such as phosphate buffer solutions or solutions rendered alkaline with caustic alkali, sodium carbonate or bicarborates and saturated with carbon dioxide), and precipitating the acids from the resulting solutions by acidification.  In the latter case, a pH value below 6 is necessary as an initial stage of adjustment, but it may be preferred to effect a coarse separation of the constituent acids by adjusting to a higher pH value, e.g. about 7.4, and to isolate the desired active constituent from the acid component passing into solution by application of the first of the alternative processes above.  The acid fractions obtained by either of the alternative methods may be subjected to further methods of purification or separation, e.g. reprecipitation, crystallization, conversion into derivatives such as esters or ethers, or selective adsorption, or combinations of these procedures.  Examples describe the application of the process to the potassium hydroxide fusion products from equilenin and dihydroequilenin and to the mixtures of synthetic 1-ethyl-2-methyl- or 1 : 2-diethyl-7-hydroxy-1 : 2 : 3 : 4-tetrahydrophenanthrene-2-carboxylic acids obtained according to Specification 591,994.  Reference is also made to the treatment p  of the products of Specification 607,134 and of mixtures of stereoisomeric hydrophenanthrene - 2 - carboxylic acids containing no hydrocarbon radical in the 2-position, e.g. 1-alkyl - 7 - hydroxy - 1 : 2 : 3 : 4-tetrahydrophenanthrene-2-carboxylic acids.  Specification 522,742 also is referred to.  The Specification as open to inspection under Sect. 91 comprises also the application of the process to ring homologues of the acids defined above, and to 7-hydroxy-1 : 2-cyclopentano-1 : 2 : 3 : 4-tetrahydrophenanthrene-2-carboxylic acids and 7-hydroxyoctahydrochrysenecarboxylic acids.  This subject-matter does not appear in the Specification as accepted.
Patent GB-509216-A (GB)
Title: Improvements in and relating to fountain pens
IPC: B43K5/14
Filed: 1938-10-27
Abstract: 509,216. Fountain pens. PAYNE, J. H. Oct. 27, 1938, No. 31099. [Class 146 (iii)] In a fountain pen of the kind in which the ink is contained in a removable cartridge 5 resiliently pressed against a seating in the nib end of the outer casing 1, the inner end of the cartridge is accommodated in a cup 7 having a projecting pin 8 passing through a plug 6 closing the end of the casing and surrounded by a spring interposed between the cup and the plug. A headed screw 10 in the pin 8 prevents separation of the cup and plug. An air-tube extending from the nib-section into the cartridge may be provided with a sharpened end for piercing the closure on the open end of the cartridge.
Patent GB-1161636-A (GB)
Title: New Thermostable Nitrogen-Containing Resins containing Amide Links and Benzimidazole Rings
Inventor: RABILLOUD GUY
IPC: C08G73/18
Filed: 1967-07-06
Abstract: 1,161,636. Glass fabric and metal laminates. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 6 July, 1967 [7 July, 1966], No. 31145/67. Heading B5N. [Also in Division C3] Thermostable resins are obtained by reacting a diester of an aromatic or unsaturated heterocyclic dicarboxylic acid and a triester of a similar tricarboxylic acid with an aromatic or unsaturated heterocyclic diamine and a similar tetramine having two pairs of ortho amino groups. Preferably the diamine is reacted in a first step and the tetramine in a second step, the esters being used simultaneously or separately, e.g. first the diester then the triester. In a preferred 3-step procedure (i) a mixture of the phenyl diester and triester, providing an excess of ester groups, is reacted with the diamine in the melt at 150‹ to 300‹ C. or in solution at 120 to 250‹ C. (ii) the product is reacted with a stoichiometric amount of tetramine based on available ester groups in the melt at 150‹ to 300‹ C. or in solution at 110‹ to 300‹ C. to obtain a relatively low polymer and (iii) a solution of the product of (ii) is cured in situ, e.g. in a laminate, at above 300‹ C., e.g. at 310‹ to 400‹ C. An adhesion promoter, e.g. degreased aluminium powder, or antioxidant, e.g. arsenic thioarsenate, may be incorporated in the solution in step (iii). An antioxidant such as 4,4-butylene-bis-(2,6- di-t-butyl) phenol may also be included during step (ii). Long lists of suitable reactants and solvents are given. The resins may be used in the manufacture of laminates under heat and pressure from (a) sheets of glass cloth impregnated with the prepolymer (ii); (b) metal sheet, e.g. stainless steel, aluminium or titanium coated with two coats of the propolymer solution dried at 100‹ C., or (c) metal sheets as in (b) with an intervening layer of impregnated glass cloth.
Patent GB-1140271-A (GB)
Title: Improvements relating to balanced welded assemblies
Inventor: MAXWELL-HOLROYD LESLIE
IPC: B23K20/12
Filed: 1966-07-12
Abstract: 1,140,271. Balancing shafts. B.R.D. CO. Ltd. 3 July, 1967 [12 July, 1966], No. 31154/66. Heading F2U. [Also in Division B3] In forming a balanced welded assembly of members, a pair of members each of which includes a cylindrical portion which may be either solid or hollow are friction welded together with outwardly projecting flash being formed at the weld and portions of the flash are removed to produce a balanced assembly. The end of a tubular propeller shaft 10 for a motor vehicle transmission is friction welded to a tubular portion projecting from the yoke 11 of a universal joint to produce inward and outward flash 20, 21 on the tube 10 and 22, 23 on the yoke 11. The assembly is placed in a balancing machine and on the indications of the machine portions of the flash are machined away e.g. where indicated by line A-A to produce a balanced assembly. The remaining flash provides a fin serving as a balance weight. The tubular propeller shaft may be replaced by a solid shaft.
Patent GB-192830-A (GB)
Title: Process for the manufacture of explosive priming compositions
IPC: C06C7/00
Filed: 1921-11-22
Abstract: Basic lead picrate, and other basic lead salts of highly nitrated organic compounds, for use in primers, percussion caps, and detonators are manufactured by adding a solution of the nitro-body, preferably mixed with an alkaline solution, to a lead salt solution whilst the latter is agitated, the addition being performed very gradually by drops.  Mixtures of salts may be precipitated simultaneously.  Besides basic lead picrate, the following basic lead salts are mentioned, namely those of: trinitrocresol, di- and tri-nitroresorcin, trinitroorcin, hexanitrodiresorcin, hexanitrodiphenylamine, dinitrobenzolnitroacid, trinitrophloroglucinol, tetranitrophenol, di- and tri-nitroaminophenol, dinitronitrosobenzene, polynitrophenols, mono- and tri-nitromethane.  Neutral salts such as the lead salts of hexanitrodiphenylamine, and trinitroresorcin may also be simultaneously precipitated with basic salts.  Reference has been directed by the Comptroller to Specification 180,605, [Class 1 (iii), Oxides &c., Metallic].ALSO:Basic lead picrate, and other basic lead salts of highly nitrated organic compounds, for use in primers, percussion caps, and detonators are manufactured by adding a solution of the nitrobody, preferably mixed with an alkaline solution, to a lead salt solution whilst the latter is agitated, the addition being performed very gradually by drops.  Mixtures of salts may be precipitated simultaneously.  Among the basic lead salts mentioned are those of di- and trinitro-benzoic acids.  Neutral salts such as the lead salts of hexanitrodiphenylamine, and trinitroresorcin may also be simultaneously precipitated with basic salts.  Reference has been directed by the Comptroller to Specification 180,605.
Patent GB-895252-A (GB)
Title: Electronic subtraction circuit
IPC: G06F7/491
Filed: 1959-09-16
Abstract: 895,252. Subtractors. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 16, 1959 [Sept. 16, 1958], No. 31619/59. Addition to 884,488. Drawings to Specification. Class 106 (1). The adder of the parent Specification is modified for use as a subtractor by complement addition. The apparatus is virtually identical with that of the prior application, the entry switches of the subtrahend being the complements of those used for entering the addend in the prior application. Specification 895,251 also is referred to.
Patent GB-667151-A (GB)
Title: Improvements in printing machine inking devices of the duct roller and blade type
IPC: B41F31/20
Filed: 1949-12-09
Abstract: 667,151. Printing-machines. RAS, M. Dec. 9, 1949 [Dec. 13, 1948], No. 31664/49. Class 100 (ii). Inking-apparatus.-An inking duct roller has at least one portion loose on its rotary' spindle, a brake being associated therewith to throttle the ink feed thereover. As shown a duct roller partially immersed in ink in a container 4 has a part 2 fixed to the driven spindle 1 and a part 3 free thereon and coupled by a pin 10 to a ring 9 which may be clamped either to a collar 7 keyed to the spindle 1 or to a fixed boss 8. A scraper blade adjustable by a number of longitudinally spaced screws (not shown) regulates the ink flow over the entire width of the duct roller. A further loose part 3 may be provided at the right-hand end of part 2.
Patent GB-608243-A (GB)
Title: An improved multiple electromagnetically operated motor-protection switch
IPC: H01H71/68
Filed: 1945-11-23
Abstract: 608,243. Automatic circuit-breakers. LANDIS & GYR SOC. ANON. Nov. 23, 1945, No. 31672.. Convention date, Nov. 25, 1944. [Class 38 (v)] In a multipole, electromagnetic, motorprotection switch which is closed and held on by a coil 3, the contact bridge for each pole is connected to the armature by a separate spring- loaded, quick-release mechanism 7, which when tripped by the overload magnet 22, mechanically opens the contacts 8, 18 in that pole, and subsequently opens an auxiliary switch to de-energize the operating coil. The quickrelease mechanism 7 comprises a spring-loaded plunger 10, in which is pivoted a pawl whose inner end engages a detent 19 on a spring- biassed trigger-arm 20, and whose outer end carries the spring-urged contact-bridge 16 and terminates in a knob 15. When the overload release magnet 22 in any pole is energized, its armature 21 strikes the trigger 20, releasing the pawl and spring 11 opens the contacts 8, 18 in that line. In the released position, the knob 15 depresses the pivoted tripping bar 24 and the extension 36 engages the auxiliary switch contact 34 to open the operating coil circuit. To close the switch after tripping, the button 32 is pressed, thereby rocking the bar 27, which during the first part of its movement releases a catch 41 to engage an eye 42 on the armature, mechanically locking it out, and in addition releases lug 35 allowing the contact 33 on the auxiliary switch to relax and open the operating coil circuit. During the latter part of the movement the tripping bar 24 is carried forward depressing the knob 15 to relatch the quickrelease mechanism. On releasing the knob 32, bar 27 is drawn back by spring 30 to unlatch the armature and close the operating-coil circuit. A thermal release comprises a bimetal strip 43, which on deflection raises an arm 45 so that the bell-crank lever 50 is released from the detent 46 to open the auxiliary switch. Specification 459,944 is referred to.
Patent GB-1039017-A (GB)
Title: A railway rail and fastening arrangement and a concrete railway sleeper for use therein
Inventor: ASTLEY HAROLD TREVOR
IPC: E01B9/30
Filed: 1964-08-04
Abstract: 1,039,017. Fastening rails to sleepers. LOCKSPITE Ltd. June 4, 1965 [Aug. 4, 1964], No. 31699/64. Heading E1G. An anchoring member for a rail fastening of the type described in Specification 861,473 has an abutment member preventing that portion of the fastening away from the rail moving away from the rail and, during driving, forcing that portion of the fastening towards the portion of the fastening disposed in the passage in the anchoring member.
Patent GB-1359793-A (GB)
Title: Rotary piston engine having a sealing strip
IPC: F01C19/04
Filed: 1972-07-06
Abstract: 1359793 Rotary positive - displacement machines DORNIER SYSTEM GbmH 6 July 1972 [4 Aug 1971] 31727/72 Heading F1F A radial sealing strip 1 of a trochoidal-type engine is lodged in the piston 2 and urged towards the casing 3 by a spring 10 and fluid pressure transmitted from either of the adjacent working spaces (depending upon which of these spaces contains the fluid at the greatest pressure) through a bore 6 or 6<SP>1</SP> past a corresponding valve plate 7, which is biased towards its closed position by a spring 8. Leakage past the strip is prevented by a sealing element 9. The centre of curvature of the head of the strip is at the point S of intersection of the trochoid T and the envelope curve, which coincides with the peripheral surface of the piston. A second embodiment, Figs. 2a and 2b, (not shown), differs in that the valve plates are replaced with two axially abutting valve elements each of which is similar to the element 9, the axes of the bores 6, 6<SP>1</SP> lie in two parallel transverse planes and communicate with the undersides of the valve elements through respective radial bores, and two sealing elements resembling the valve elements replace the element 9, the spring 8 being dispensed with. A third embodiment, Figs. 3a and 3b, (not shown), differs in that the strip is lodged in the casing and divided obliquely into two parts, and there are bores and valve elements similar to those of the second embodiment. The latter embodiment may be modified in that the groove and bores are formed in a partly cylindrical insert instead of the body of the casing, Fig. 4, (not shown).
Patent GB-392836-A (GB)
Title: Improvements in cigarette making machine tobacco feeds
IPC: A24C5/39
Filed: 1932-11-10
Abstract: 392,836. Cigarette-making machines. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(American Machine & Foundry Co. ; 511, 5th Avenue, New York, U.S.A.) Nov. 10, 1932, No. 31835. [Class 130.] Relative longitudinal movement is provided between the pin roller 8 and the shroud 35, to prevent lodgment of tobacco dust. The end of the roller spindle may be formed with a peripheral cam groove 25 engaged by a pin 27 attached to the bar 29 carrying the shroud 35. Guide-slots for the bar are situated in the framing and in a bracket 33 which depends into a peripheral groove in the spindle, preventing dust from reaching the cam-groove. The picker-roller surface may contain recesses 36 producing a suctional effect in clearing the upper part of the chute 37.
Patent GB-1436646-A (GB)
Title: Hearing protectors
IPC: A61F11/14
Filed: 1974-07-18
Abstract: 1436646 Hearing protectors E S B INC 18 July 1974 [9 Oct 1973] 31942/74 Heading A3V A hearing protector comprises two ear cups 12 each with a mounting stud passing through two positioning members 34, 36 having substantially hemispherical surfaces engaging either side of one end of a head band 10 and held by means at the end of the stud. One positioning member 58, Fig. 4, may be integral with the ear cup and the other integral with the nut 62, and the ear cup flattened at 50. The headband may have a series of openings 14 joined by a channel in which the stud can slide (Fig. 3, not shown). A fluid filled sealing ring 15 surrounds the ear cup which has a layer of foam lining.
Patent GB-1263096-A (GB)
Title: A vibratory feeder for use with a chipper
IPC: B65G65/44
Filed: 1969-06-25
Abstract: 1,263,096. Vibratory conveyers. REX CHAINBELT Inc. 25 June, 1969 [15 Aug., 1968], No. 31977/69. Heading B8A. [Also in Division B5] A vibratory feeder for use with a chipper for reducing scrap lumber to chips the chipper 22 having an infeed spout 21 and an anvil, a trough 1 having a discharge end 20 adapted to extend into the spout and overlie the anvil, resilient means stressed in a low spring rate direction supporting the trough for vibration in a vertical plane and stressed in a high spring rate when resisting lateral forces supplied to the trough, means for guiding the trough along an inclined path in the plane of vibration, and drive means for reciprocating the trough along the inclined path. The trough is supported from a base 2 by pairs of rocker arms 3 and shear spring assemblies 4, each consisting of a plate 46 disposed between a pair of rubber bushes clamped to plates 47. The trough is vibrated by an eccentric shaft 5 which is driven from a motor 6 and has a connecting rod 8 connected to a lever 9 pivoted to a bracket 10 and shock absorber 11 on the trough. The trough is divided into a loading section 12, a screening section having a perforated base, and a non- metallic section 16 provided with a detector 17 arranged to stop the conveyer if a metallic object is detected. The discharge end 20 of the trough is resiliently connected at 31 to the trough and extends into the infeed spout 21 which is adjacent the anvil 27 of the chipper which is substantially vertical and has an arcuate portion 28. The chipper is provided with rotatable disc 24 having knives 26 inclined to the radius of the disc.
Patent GB-175077-A (GB)
Title: Improvements in or relating to the manufacture of dialkyl sulphates
IPC: C07C29/06
Filed: 1920-11-12
Abstract: Dialkyl sulphates are obtained by distilling alkyl hydrogen sulphates or mixtures containing them in vacuo, so that only the small portion of liquid actually undergoing distillation is heated and so that the vapours and residue are rapidly removed from the point at which distillation occurs.  For example, the liquid containing alkyl hydrogen sulphate may flow in a thin film over a heated surface, or down a heated coil or tube, or may be sprayed into the still or carried into the heated zone by a revolving drum or moving band.  In an example a mixture of ethyl alcohol and fuming sulphuric acid is caused to flow, by means of a revolving orifice, down the inside of a vertical heated tube connected to a vacuum and condensing system; diethyl sulphate separates from the distillate, the remainder, consisting of alcohol, sulphuric acid &c. being utilized in the next operation.  Dimethyl, dipropyl, dibutyl, &c. sulphates may be similarly prepared.